diff --git a/README.md b/README.md
index 508eabd..6db44de 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ It will run and compile a MobileInsight apk, and run an offline MobileInsight an
 
 When the process finish install and returns the shell, a MobileInsight app is already compiled and copied to your path (`/path/to/dev`). You can install it on supported Android phone and try it out immediately using `adb`.
 
-	adb install MobileInsight-4.0.0-debug.apk
+	adb install MobileInsight-5.0.0-debug.apk
 
 You can stop the virtual machine using either command:
 
@@ -74,7 +74,6 @@ We love pull requests and discussing novel ideas. You can open issues here to re
 
 The following Slack group is used exclusively for discussions about developing the MobileInsight and its sister projects:
 
-+ Dev Slack Group: https://mobileinsight-dev.slack.com (join via this [link](https://goo.gl/htJGqT))
 + Email: support@mobileinsight.net
 
 For other advanced topics, please refer to the wiki and the [MobileInsight website](http://www.mobileinsight.net).
\ No newline at end of file
diff --git a/Vagrantfile b/Vagrantfile
index fe4b7c6..8164980 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -2,28 +2,45 @@
 # vi: set ft=ruby :
 
 # MobileInsight Vagrant Installation Script
-# Copyright (c) 2019 MobileInsight Team
+# Copyright (c) 2017 MobileInsight Team
 # Author: Zengwen Yuan, zyuan (at) cs.ucla.edu
-# Version: 1.3
+# Version: 1.2
 
 $INSTALL_BASE = <<SCRIPT
 apt-get update
 apt-get -y install build-essential pkg-config git ruby ant
 apt-get -y install autoconf automake zlib1g-dev libtool
-apt-get -y install bison byacc flex ccache
+apt-get -y install bison byacc flex ccache libffi-dev
 apt-get -y install openjdk-8-jdk openjdk-8-jre
+update-alternatives --set java /usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java
 apt-get -y install python-dev python-setuptools python-wxgtk3.0
+apt-get -y install python3-dev python3-setuptools python3-pip
 apt-get -y install libc6:i386 libncurses5:i386 libstdc++6:i386 lib32z1 libbz2-1.0:i386
+apt-get -y install libgtk-3-dev libpulse-dev
 
 gem install android-sdk-installer
 
-easy_install pip
-pip install cython==0.25.2
-pip install pyyaml
-pip install xmltodict
-pip install pyserial
-pip install virtualenv
-pip install virtualenvwrapper
+# # Use Python3.7. Python3.8 has bugs with P4A
+# add-apt-repository -y ppa:deadsnakes/ppa
+# apt-get update
+# apt-get -y install python3.7
+
+# Set default Python to Python3
+# alias python=python3.7
+alias python=python3
+
+# easy_install pip
+pip3 install --upgrade pip
+pip3 install cython
+pip3 install pyyaml
+pip3 install xmltodict
+pip3 install pyserial
+pip3 install virtualenv
+pip3 install virtualenvwrapper
+pip3 install Jinja2
+pip3 install colorama
+pip3 install sh==1.12.1
+# pip3 install wxpython
 
 SCRIPT
 
@@ -34,13 +51,17 @@ mkdir /home/vagrant/mi-dev
 cd /home/vagrant/mi-dev
 
 # Clone MobileInsight-core repo
+# git clone -b dev-py3 https://github.com/mobile-insight/mobileinsight-core.git
 git clone https://github.com/mobile-insight/mobileinsight-core.git
 
 # Clone MobileInsight-mobile repo
+# git clone -b dev-py3 https://github.com/mobile-insight/mobileinsight-mobile.git
 git clone https://github.com/mobile-insight/mobileinsight-mobile.git
 
 # Clone python-for-android repo
 git clone https://github.com/mobile-insight/python-for-android.git
+# git clone -b dev-mi5 https://github.com/mobile-insight/python-for-android.git
+# git clone -b p4a-MI https://github.com/luckiday/python-for-android.git
 
 SCRIPT
 
@@ -62,8 +83,8 @@ debug: true
 ignore_existing: true
 components:
   - platform-tools
-  - build-tools;25.0.3
-  - platforms;android-19
+  - build-tools;27.0.3
+  - platforms;android-27
   - extras;android;m2repository
 EOF
 
@@ -74,25 +95,25 @@ export ANDROID_HOME=/home/vagrant/android-sdk
 android-sdk-installer
 echo 'ANDROID_SDK_HOME=/home/vagrant/android-sdk' >> ~/.bashrc
 
-# Replace SDK tool with version 25.2.5 to use ant build
-cd $ANDROID_HOME
-rm -rf tools
-wget https://dl.google.com/android/repository/tools_r25.2.5-linux.zip
-unzip tools_r25.2.5-linux.zip
-rm tools_r25.2.5-linux.zip
+# # Replace SDK tool with version 27.0.3 to use ant build
+# cd $ANDROID_HOME
+# rm -rf tools
+# wget https://dl.google.com/android/repository/build-tools_r27.0.3-linux.zip
+# unzip build-tools_r27.0.3-linux.zip
+# rm build-tools_r27.0.3-linux.zip
 
-# Download and setup Android NDK r10e
+# Download and setup Android NDK r19
 cd ~
-wget https://dl.google.com/android/repository/android-ndk-r10e-linux-x86_64.zip
-unzip android-ndk-r10e-linux-x86_64.zip
-echo 'ANDROID_NDK_HOME=/home/vagrant/android-ndk-r10e' >> ~/.bashrc
+wget https://dl.google.com/android/repository/android-ndk-r19b-linux-x86_64.zip
+unzip android-ndk-r19b-linux-x86_64.zip
+echo 'ANDROID_NDK_HOME=/home/vagrant/android-ndk-r19b' >> ~/.bashrc
 echo 'PATH=$PATH:$ANDROID_NDK_HOME:$ANDROID_SDK_HOME:$ANDROID_SDK_HOME/tools:$ANDROID_SDK_HOME/tools/bin:$ANDROID_SDK_HOME/platform-tools' >> ~/.bashrc
 source ~/.bashrc
-rm android-ndk-r10e-linux-x86_64.zip
+rm android-ndk-r19b-linux-x86_64.zip
 
 # Install python-for-android
 cd /home/vagrant/mi-dev/python-for-android
-sudo python setup.py install
+sudo python3 setup.py install
 
 # Prepare MobileInsight Android app compilation
 cd /home/vagrant/mi-dev/mobileinsight-mobile
@@ -103,19 +124,21 @@ make config
 # Use default config to compile a python-for-android distribution
 make dist
 
-# Use example keystore to compile and sign a release version of MobileInsight
-# keystore and key password: mobileinsight
+# # Use example keystore to compile and sign a release version of MobileInsight
+# # keystore and key password: mobileinsight
 make apk_debug
 
-# Copy MobileInsight apk to local folder
-# Please exit vagrant ssh shell and use adb to install
-cp MobileInsight-4.0.0-debug.apk /vagrant
+# # Copy MobileInsight apk to local folder
+# # Please exit vagrant ssh shell and use adb to install
+cp MobileInsight*.apk /vagrant/
 
 SCRIPT
 
 Vagrant.configure(2) do |config|
-  config.vm.box = "ubuntu/xenial64"
+  # config.vm.box = "bento/ubuntu-16.04"
   # config.vm.box_version = "201708.22.0"
+  config.vm.box = "bento/ubuntu-20.04"
+  config.vm.box_version = "202004.27.0"
 
   config.vm.provider "virtualbox" do |vb|
     # # Display the VirtualBox GUI when booting the machine